Why We Get Sweat Stains—And What You Can Do About Them - Mental Floss

Mental Floss
Why We Get Sweat Stains—And What You Can Do About Them
Mental Floss
If sweat is colorless, why does your favorite white T-shirt get those unfortunate yellow armpit stains after a long day spent under the sun? As the Sci Show's Hank Green explains in the video below, perspiration itself isn't the culprit; it's actually ...et plus encore »